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The Bugs Bunny Crazy Castle II

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Title Screen

The Bugs Bunny Crazy Castle II

Also known as: Mickey Mouse II (JP), Mickey Mouse (EU 1992), Hugo (EU 1995)
Developer: Kemco
Publishers: Kemco (JP/EU 1992) Laguna (EU 1995), Seika (US)
Platforms: Game Boy, Super Game Boy
Released in JP: April 26, 1991
Released in US: September 1991
Released in EU: 1992 (Mickey Mouse), 1995 (Hugo)

CodeIcon.png This game has unused code.
GraphicsIcon.png This game has unused graphics.
MusicIcon.png This game has unused music.
RegionIcon.png This game has regional differences.
Carts.png This game has revisional differences.

Bugs Bunny: Crazy Castle II is the second portable entry in the series. It also got five distinct versions depending on the region and year.

Unused Song

The unused song from the NES version was ported to all of the Game Boy versions. Use the following Game Genie code to play the unused song at each version's title screen. Hugo has a slightly different version of the unused song.

Version Code
Mickey Mouse
Mickey Mouse II
Bugs Bunny: Crazy Castle II
Bugs Bunny Collection
(Source: nensondubois)

Regional Differences

Game Names

The game was first released in Japan as Mickey Mouse II. The United States saw Bugs Bunny: Crazy Castle II, which was later released in Europe as Mickey Mouse. Three years later, the game was rereleased in Europe as Hugo with a few noteworthy changes, including added Super Game Boy support and a slightly remixed soundtrack. Crazy Castle II was released in Japan as part of Bugs Bunny Collection, adding a few borders and the missing palettes that Hugo received.

Now that's a crazy castle!

Title Screen

Mickey Mouse II Bugs Bunny: Crazy Castle II Mickey Mouse Hugo Bugs Bunny Collection
Mickey Mouse II J GB Title.png Bugs Bunny Crazy Castle 2, The U GB Title.png Mickey Mouse E GB Title.png Hugo E SGB Title.png Bugs Bunny Collection Crazy Castle II Title J SGB.png


For the Hugo release, the passwords remained the same but all the vowels were switched to other letters.

  • A = changed to G
  • E = changed to C
  • I = changed to F
  • O = changed to B
  • U = changed to D